Scaled Composites recently completed the ninth full-scale firing of the RM2 rocket motor that will power SpaceShip Two. Scaled performed a 10-second burn followed by a 58-second burn, according to the test log.
The test continued evaluation of all systems and components including pressurization, valve/injector, fuel formulation and geometry, nozzle, structure, and performance. Scaled performed the first test-firing of a full-scale RM2 in April of 2009.
Virgin Galactic has stated that it intends to begin testing motors in powered flight on SpaceShip around the middle of this year.